fix macos build error
fix macos build error

Summary:
Undefined symbols for architecture x86_64:
  "boost::system::system_category()", referenced from:
      ___cxx_global_var_init.6 in libredex.a(CallGraph.cpp.o)
      ___cxx_global_var_init.6 in libredex.a(DexClass.cpp.o)
      ___cxx_global_var_init.6 in libredex.a(DexLoader.cpp.o)
      ___cxx_global_var_init.6 in libredex.a(DexOutput.cpp.o)
      ___cxx_global_var_init.6 in libredex.a(DexUtil.cpp.o)
      ___cxx_global_var_init.6 in libredex.a(Inliner.cpp.o)
Closes https://github.com/facebook/redex/pull/293

Reviewed By: justinjhendrick

Differential Revision: D6872453

Pulled By: minjang

fbshipit-source-id: a18f52f975851eee2bedba454aea94cd110cfc4c

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex